SteriPEN Classic with Pre-Filter Bundle
Collect water and purify when convenient. The 8,000 treatment Classic uses germicidal ultraviolet light to destroy bacteria, viruses and protozoa (ie giardia) that could make you sick. Included Pre-Filter fits most wide-mouth water bottles and removes particulates. Classic purifier weighs 5.7 oz with 4 AA lithium batteries (not included). Safe Water System also includes a BPA-free Nalgene bottle.